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Solution to the Problem of Action

challenge

Discover why people act,
individually and jointly.

We have to ask what actions are.
To see why problem is pressing, suppose we just replace `act` with `move`.
So many things move—rocks, people, plants, continental plates and bacteria—that it makes no sense to look for a general theory about why things move.
If we are to have a coherent research project, we need a principled way of limiting our enquiry to actions as opposed to movements more generally.
Bacteria turn out to behave in suprisingly sophisticated way, as do plants and, of course, machines.
We would ideally like a principled way of delimiting the things we are asking about so that we are not thinking above movement generally.
image source: https://www.eurekalert.org/news-releases/939340

What distinguishes your actions from things that merely happen to you?

(The Problem of Action, see Philosophical Theories of Action)

‘Now what is an action? Not one thing, but a series of two things: the state of mind called a volition, followed by an effect. The volition or intention to produce the effect, is one thing; the effect produced in consequence of the intention, is another thing; the two together constitute the action.’

Mill, System of Logic (1.3.6) quoted in Hyman (2015, p. 218)

Two Integration Questions to solve (dual-process, motor)

Objection 1

habitual processes

Some actions run counter to any of the agent’s intentions because they are dominated by habitual processes.

Objection 2

motor processes

Invoking motor representations yields a solution to the problem of action that is no worse than the Standard Solution.

Integration Questions (x2): Yes, they actually conflict.

Next step: how to revise the theories?

I need an alternative to some of the theories. And what I want to do, I think, is to change the philosophy. This makes sense to me because even if I fix the habitual process problem, I still got the motor representation problem.
So I have two different problems with a philosophical theory. It seems like the efficient thing to do here is to target the philosophical theory.

a nonstandard solution

background

goal != intention

And in order to do that, I start with the distinction between a goal and an intention. A goal is an outcome to which an action is directed.

A goal is an outcome to which an action is directed.

How should we understand directedness?
The standard idea is that we understand it in terms of mental states and processes—intentions or motor representations or whatever.
But there is an alternative: we can understand directedness in terms of a set of problems to be solved. Let me explain ...

Which outcomes are achievable?

For each outcome, which means of achieving it are available?

Of the various means of achieving a given outcome, which best balance cost against well-suitedness?

[Of the various means of achieving a given outcome, which best balance cost against well-suitedness?] So there you are at the dinner table and you can reach across and take the paper. It's just in that kind of borderline where doing that would be a little bit rude. Or you could ask Lisa to pass it to you, but that's going to involve a bit of an interruption and a bit of a wait while Lisa puts her fork down and everything. So you've got to work out of the different ways of getting that pepper, which is the best balance.

Of the achievable outcomes, which best balance cost against expected benefit?

For an action to be directed to an outcome is for it to occur because there is one or more outcome in relation to which problems such as these have been, or appear to have been, solved.

---

Having settled on an outcome and means, when should these be maintained?

...

An action is an event that is directed to an outcome.

In performing an action, there's a set of questions that, one way or another, have to be answered, and we can use that to characterise the notion of directness. For an action to be directed to an outcome is to the action to occur, because there's one or more outcome in relation to which problems such of these have been or appear to have been solved.
So instead of thinking of directness as constituted by intention or any other kind of particular state or process, let's make a shift and think about directness in terms of answering questions.
There has to be a process by which these problems are solved, of course. But we specify directedness in terms of the problems to be solved, not the processes which solve them.
Because the goal-directed process (+motor processes) solves several of these problems, we can see it as underpinning instrumental action.
But here's an objection. None of this could be any use to us in solving the problem of action, because we've already presupposed a notion of action, even in raising the question and answering it. So my first thought is, look, this is really no use to us at all. It's a completely hopeless direction.
To repeat: First thought: we are assuming a notion of action so cannot use this to elucidate the notion of action.
Second thought: None of this depends on the things we are talking about being actions. We can replace action with event and things will go find
The objection is that we can't use this to solve the problem of action because we've presupposed a notion of action. But actually. Nothing that we've said so far really has to be specific to action. So we could rewrite this to say something about events and we would get just the same thing.
We're constructing a notion of directness by constructing a theory. The theory says, look, there's a bunch of questions that have to be answered. And answering these questions is characteristic of action. So we can say, look, well, we're just going to say for an event to be directed to an outcome is for there to be an outcome that's relevant to problems such as these having been solved or appearing from the point of view of the agent or individual to have been solved. So now we've got a notion of goal-directedness that doesn't presuppose a notion of action at all.
And then we can do something really, really simple.
We can say that an action is an event that's directed to an outcome.
If we return to the objections, you can see that they are now solved ...
But before I do that I want to check everyone understands.
To conclude this part: this is how to solve the Problem of Action

challenge

Discover why people act,
individually and jointly.

What distinguishes your actions from things that merely happen to you?

An action is an event that is directed to an outcome.

Goal-directed, habitual processes, and motor processes and are all ways of ensuring the directedness of an event to an outcome.

Objection 1

habitual processes

Some actions run counter to any of the agent’s intentions because they are dominated by habitual processes.

Objection 2

motor processes

Invoking motor representations yields a solution to the problem of action that is no worse than the Standard Solution.

An action is an event that is directed to an outcome.

Objection 1 is no problem for the new view: we are thinking of intention as at most one ways of ensuring directedness.
Objection 2 is also no problem: motor representations and processes are just one among several ways of ensuring directedness.

Note

This only works for purposive actions.

Brand, 1984

Important to see that, in the solution to the Problem of Action I am proposing, there is a break with the Causal Theory of Action.
remember to explain why the dual-process theory motivates this: it’s because the processes are many
If the processes were just one, the Causal Theory of Action would be a sensible project.

1. Which things are actions (as opposed to mere happenings)?

— explained by problems to be solved

2. Which states or processes enable agents to act?

— identified by conjecture + discovery

The Causal Theory of Action answers the first question by answering the second question. By contrast, I think they are best treated independently ...
To conclude this part: this is how to solve the Problem of Action

challenge

Discover why people act,
individually and jointly.

What distinguishes your actions from things that merely happen to you?

An action is an event that is directed to an outcome.

1. Solve the Problem of Action.

2. Identify a role for motor representation in joint action.

This solution is not to be taken too seriously—as explained on the handout. My job is not to solve problems—that is yours.
The second thing I wanted to do today was to identify a role for motor representation in joint action, because so far we looked at the case of ordinary individual action, and we looked at the way that motor representation might matter there. But we didn't make the connection between joint action and motor representation. So we've done like 85% of the work for this already. We've done quite a bit about joint action. We've done quite a bit about motor representation. So with a tiny bit more work we can connect those two things together.